LASIK and PRK Complications and Outcomes (F)

Question 1

What are the preoperative medications prior to LASIK or PRK?

Answer 1

1. fluoroquinolone
2. tetracaine
3. betadine

Question 2

What is the condition following LASIK or PRK that has symptoms of photophobia with an apparent absence of inflammation? 1. How long after surgery does this occur? 2

Answer 2

1. Transient Light Sensitivity Syndrome (TLSS)

2. a few weeks after surgery with femtosecond laser

Question 3

What is a common post-operative with excimer finding that is a mismatch between the posterior flap curvature and new stromal bed?

Answer 3

striae

Question 4

What situations lead to a higher amount of flap displacements?

Answer 4

1. hyperopes

2. microkeratome instead of femto

Question 5

What is the condition follow LASIK in which inflammatory cells are found in the stromal interface? 1. How long after surgery does this occur? 2

Answer 5

1. diffuse lamellar keratitis (DLK)

2. 2 to 6 days postop

Question 6

What are the potential causes of DLK?

Answer 6

1. sterilization problems
2. lid disease and staph
3. metallic particles
4. early femto laser use

Question 7

What is the treatment for DLK?

Answer 7

1. if stage 1 or 2: pred forte q1hr
2. if stage 3: lift flap, irrigate interface, culture, then pred q1hr
3. if stage 4: flap lifting found to inc stromal loss (so no longer done). just pred q1hr

Question 8

Is there definitive evidence that LASIK can cause RD?

Answer 8

no